Electric Fans

[Fubar]

Taz,
Thank you for all of your advice. I'll see about ordering the t-stat today on-line or go to a local parts house and see if they carry one.

The air temps here in Vegas do get to below freezing in the winter, hell last winter I had snow in my front yard which I didn't think was possible for Vegas but yet it happened. Anyway what problems if any am I going to have running the truck when the temps get down towards freezing? Do I let the truck idle in the garage with the door open of course until it reaches normal operating temp then head out? Or is it not a big issue until the air temps get down to -20 which it never get to here in Vegas? I understand the dealership has to give a safe answer because they don't know where I am going to be driving. On the on the other hand I don't want to do something to the truck which is going to dictate where I can drive. I mean if I put the 160 t-stat in am I going to have problems driving to say Colorado to go skiing in the winter?

Thanks again to everyone who has given me some advice.

[H2 Bill]

This may be a dumb question, but are you guys doing this because of overheating problems?

[H2 Bill]

Ahhhh! Good point, you can pick up a few extra HP! I just asked because I just started having some overheating problems.
Thanks

[kdio]

H2 Bill, Did you replace the radiator fluid with Dexacool? The shop that installed my radiator calls it Deathcool. There is a large class action suit out on this product and did not recommend that I use it. He used a Prestone product that is non corrosive to aluminum, and recommends that you change the fluid at least every 24 months.

[H2_SUT_SC]

kdio - did you have your work done at Hummer of Sac?

[NU2H2]

I am in the same situation. I used to have the 6.0 Silverado SS with 282's on and it worked perfectly in the TX summer never missed a beat. I used a custom fan controler though not the crappy Flexalite one.
I am thinking the 282's will work fine although the rep told me that the 290 universal fit might be a better option I am not sure yet will do more research.
Jonathan

[H2 Bill]

kdio, I spoke with Ron Davis radiator and they said that they didn't stock any for the H2 but could make one for it. Apparently they have a good reputation for radiators
I have been looking at the one from Breathless Automotive which is supposed to be a drop in, direct replacement too.
Please keep us posted!!

[Fubar]

I took the H2 back to the dealer today. Was out taking care of a few things and it started to get hot. Ambient air temp today is 107, by the time I drove the 20+ miles to the dealership the trucks temp was about 240. They have a new service manager now and a new master mech so I had the service manager pop the hood. Upon doing so his first comment was how hot it felt. They (the dealership) is going to take a look at it on Monday and then call me with options hopefully.

Taz, I don't need to block any air from getting to the radiator. The inner cooler for the Sc is doing a great job of that. It blocks about 2/3 of the radiator. I menationed that to the service manager today and said that for a noraml H2 installing a 160 t-stat may cause problems but I really think that it would help in my case. He seamed open to the idea but reminded me that simply changing the t-stat is not going to cool the engine. The point at which the fans come on would need to be adjusted as well. I said that should be possible with the flex-lite fans that are there now. He was also open to the idea of installing the fans from the GM 2500 series truck but didn't think it would be necessary.

ARH1956, thanks for the suggestion. I will ask them on Monday if they think it would help to change out the fans for a different model of Flex-lite.

As the ambient temps here cool I think my troubles will go away but it will only be a temp solution that will return again next summer. Hopefully with new people at the dealership someone will come up with a solution that will not cost me 1/2 the price of the truck.

thanks again guys for all the suggestions.